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PF. J. RABBETH. Reservoir Bolster Bearing for Spindle vof Spinning Machinery.

Patented May21; 1878iA v Tag. 2.

Tag 4 /i I NQ: 294,085.l

l Trove/ MZK I mPErERS. FHOTO-LITHOGRAPHER UNITED STATES' .PATENT OFFICE.-

FRANGIS J. RABBETH, OF PAWIUOKET, RHODE ISLAND.

IMPROVEMENQT IN`RESERVOIR BQLSTER-BEARINGS vFOR SPINDLES 0F SPINNING-MACHINERY.

Specification forming part of Letters Patent No. 204,085, dated May 21, 1878; application filed November 17, 1875.

To all whom it may concern:

Be it known that I, FRANCIS J. RABBETH, of Pawtucket, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Reservoir Bolster-Bearings for Spindles of Spinning Machinery, of which the following is a specification:

My said improvements relate exclusively to spinning machinery and to that class of spindle bolster-bearings which are combined with reservoirs for containing a lubricant.

The object of my invention is the proper control of the oil which is contained within the reservoir, which also contains the spindle, bolster-bearing, and step. The spindle, between its step and the top of the bolster, being surrounded by oil, its rapid motion is conducive always to a greater upward draft of oil than is requisite for its proper lubrication, and this involves not only a serious waste of oil, but also much labor in keeping the spinningframe properly wiped. In that class of spindles which have an annular oil-reservoir in the bolster-tube for lubricating the bolster only a comparatively small quantity of oil is contained, and for this reason various means have been heretofore devised for inducing an interior upward current and an exterior -downward current for maintaining a continuous ci-rculation of oil from and to the reservoir. Iii the class of spindle-bearings which have a reservoir containing the lower end of the spindle and its step, and which have also an auxiliary or feeding reservoir, provision has heretofore been made for returning from the top of the bolster-tube the excess of oil carried upward by the spindle into the upper end of the auxiliary reservoir. Wherever this circulation occurs the oil is obviously continuously exposed more or less to contact with the atmosphere and to dust and dirt, thereby impairing its value as a lubricant.

By reason of my invention the oil is not circulated, as heretofore, but is confined Within the reservoir, and the parts are so constructed and arranged that while the spindle cannot fail to carry upward suflicient oil for .properly lubricating the upper or bolster bearing, it cannot carry upward any excess of oil.

My invention consists, broadly stated, in the combination, with alive spindle and .an oilrese'rvoir which contains the step and the bolster-bearing for the spindle, of a bolsterbearing which is scored or grooved spirally. Now, while this combination of elements isa novel one, no practical value accrues therefrom unless the spiral scores or grooves are so cut and arranged with relation to the spindle, and the direction in which, it is revolved in service, that the spindle when rotated will cooperate with the spiral scores or grooves to che-ck, prevent, and force downward the ex-v cess of oil which the spindle would otherwise carry upward, and I therefore'limit my invention not only to the combination as stated,but

also to such a construction of the spiral grooves spindle in which the spiral ducts are embodied l Fig. 5 represents the same bushing in longitudinal central section. v

The bolster-reservoir is shown at A, at the bottom of which is the spindle-step a, which is readily prepared for the spindle after the reservoir has been reamed. The upper bearing is at b. This is a tubular bushing, which is similar in its general form and its arrange ment with relation to the bolster-reservoir to bushings heretofore employed in connection with the single reservoir. Two kinds of spiral grooves or scores are shown on this bushing, neither of which is novel when considered merely as spiral scores or grooves in a bolstertube, although such have never7 to my knowlthe interior wall of the bolster-reservoir constitutes one side, and that its ei'ect as a groove will be the same as if a cut had been made wholly froinw-ithin the^bus11ing, leaving the! outer surface intact. The minor score is shown in Fig. 5 at d. This minor score--is-cut spirally in a direction corresponding with that of the main score c, but is much longer, and, the interior of the tube is encircled .several times. although either will separately producev ap proximately the results desired. i

As tlie'oil, which is carried upwardby the spindle, has a spiral movement corresponding in direction with the rotative movementof the spindle, the scores orvgrooves in `the tube.or bolster should be spiraled in the y same direction-that is to say, `when viewed'fromabove the spiral groove or 'score should correspond. in its direction with the rotative movement of the spindle; but when viewedfrom below, of course,the spindle would, underlthe same conditions, be rotated in a direction opposite lto the direction of the spiralgrooveA or score.

An indepen dent or supply reservoir is shown at B provided atyits upper end with plug, as at i. It is a tube cast solidly-with thebol-` ster-reservoir A, the base e, and screwshank f. It is, ofcourse, impracticable tocast these reservoirs with an `open duct for `connecting them with each otherand,tl 1erefore'I formf this duct, as atrig, by 'drillinglaterally-from the outside of the supply-reservoir near its base, through and across the interiorthereof, and into the bolster-reservoir at a ypointcon- I prefer to employ both of these scores,' y

bined with a left-hand spiral.

stantially as described.

siderably above thespindle-step. When thus drilled the outerend of the duct is plugged, as at h, either with iron wire, or with solder or other soft metal, or by means of a small screw, as may be desired. y

In operation, the scores in the bushing, in-

stead offservingas -upwardfducts or conduits for oil, as heretofore, serve as checks or ob- --structions to-the upward delivery of the oil,

and this is due to thefact )that a right-hand Ispindle is combined with a spiral groove,

which, when viewed fromaboveris a righthand spiral, and a left-hand spindle is com- I have herein referred to pre-existing spindles provided with oil-reservoirs, and also `to .1 pre-existing spiral scores Orzgrooves in spindleholsters 5 but I `knowfofno spindle i prior to l my invention with whichian 1 oil-reservoirxand `spiral scores or grooves were so employed that vfoil `would be prevented by the scores ffroin 'being unduly carried upward i on the spindle from the reservoir.

Having thus described my invention, I

The combination, with fa live i spindle 'an d lan 'oil-reservoir' which contains gthe fstepjand the bolsterlbearing for f the spindle,` of jabol ster-beajrin g which is scored `or grooved spirally for forcing downward the `excess `of oil carried upward' by the spindle when in imotionfisb- Renners fnaBBnrH. i 

